For Qt people - do you have a good website for examples with embedded platforms? I've never touched Qt, so a simple example would be a good place to start.
That's going to depend on what you mean by embedded. Most projects are going to use Qt->X11->Linux. Sure, that can be an embedded SOC like the Raspberry PI but it isn't embedded like Arduino (just to pick a tiny platform).
There are lots of Qt/Python examples and books have been written on the subject.